A terrifyingly well-ventilated half-zip short-sleeved shirt. Thin and breathable, with a rough texture that keeps it from sticking to the skin, making it comfortable even in the heat of summer. When you catch the wind on a ridgeline, it feels like all the heat is being drawn away. Discontinued item. Labeled as JAPAN M / US S, but it fits perfectly on someone 160cm tall and 47kg, so I'm listing it as a size S. The color is a greenish-gray, with the old logo. - Color: Gray - Design: Half-zip - Material: Breathable fabric - Features: Seam design on the back Thank you for looking.